Why did I get a muscle spasm?!

Question: I was running up a flight of stairs when I suddenly felt extreme pain in my leg around the joint area. I'm guessing because I went into a sudden jolt of vigorous activity by running up the stairs when just a second ago I had just been standing there.

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Answers: I was running up a flight of stairs when I suddenly felt extreme pain in my leg around the joint area. I'm guessing because I went into a sudden jolt of vigorous activity by running up the stairs when just a second ago I had just been standing there.

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Yep, sudden activity if you have not warmed the muscle up can cause a spasm. Good Luck

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